1 // SPDX-License-Identifier: GPL-2.0-or-later
11 #include <linux/reset-controller.h>
14 #include <dt-bindings/reset/aspeed,ast2700-scu.h>
29 	const struct ast2700_reset_signal *signal;  member
35 	spinlock_t lock; /* Protect read-modify-write cycle */
162 	void __iomem *reg_offset = rc->base + rc->info->signal[id].offset;  in aspeed_reset_assert()
164 	if (rc->info->signal[id].dedicated_clr) {  in aspeed_reset_assert()
165 		writel(rc->info->signal[id].bit, reg_offset);  in aspeed_reset_assert()
167 		guard(spinlock_irqsave)(&rc->lock);  in aspeed_reset_assert()
168 		writel(readl(reg_offset) & ~rc->info->signal[id].bit, reg_offset);  in aspeed_reset_assert()
177 	void __iomem *reg_offset = rc->base + rc->info->signal[id].offset;  in aspeed_reset_deassert()
179 	if (rc->info->signal[id].dedicated_clr) {  in aspeed_reset_deassert()
180 		writel(rc->info->signal[id].bit, reg_offset + 0x04);  in aspeed_reset_deassert()
182 		guard(spinlock_irqsave)(&rc->lock);  in aspeed_reset_deassert()
183 		writel(readl(reg_offset) | rc->info->signal[id].bit, reg_offset);  in aspeed_reset_deassert()
192 	void __iomem *reg_offset = rc->base + rc->info->signal[id].offset;  in aspeed_reset_status()
194 	return (readl(reg_offset) & rc->info->signal[id].bit) ? 1 : 0;  in aspeed_reset_status()
207 	struct device *dev = &adev->dev;  in aspeed_reset_probe()
211 		return -ENOMEM;  in aspeed_reset_probe()
213 	spin_lock_init(&reset->lock);  in aspeed_reset_probe()
215 	reset->info = (struct aspeed_reset_info *)id->driver_data;  in aspeed_reset_probe()
216 	reset->rcdev.owner = THIS_MODULE;  in aspeed_reset_probe()
217 	reset->rcdev.nr_resets = reset->info->nr_resets;  in aspeed_reset_probe()
218 	reset->rcdev.ops = &aspeed_reset_ops;  in aspeed_reset_probe()
219 	reset->rcdev.of_node = dev->parent->of_node;  in aspeed_reset_probe()
220 	reset->rcdev.dev = dev;  in aspeed_reset_probe()
221 	reset->rcdev.of_reset_n_cells = 1;  in aspeed_reset_probe()
222 	reset->base = (void __iomem *)adev->dev.platform_data;  in aspeed_reset_probe()
224 	return devm_reset_controller_register(dev, &reset->rcdev);  in aspeed_reset_probe()
229 	.signal = ast2700_reset0_signals,
234 	.signal = ast2700_reset1_signals,